Here's something new.

Lucy and Charlie were sitting on the topmost perch of the parrot tower.

Lucy was busy working on her toes, and Charlie bowed his head, wanting her to preen it. Lucy was occupied, and ignored him. Charlie nipped the foot that she was standing on.

Then there was a fracas and both of them fell to the top of the cage.

Charlie still wants her to preen his head, and Lucy is still refusing.

Birds.